As we enter the era of great development, population is the key. Seeing that from a battle to a construction game, one of the biggest problems cannot be avoided, that is, as the population expands, aging and the proportion of newborns.

No matter how good medical skills are, even if they cannot be popularized and ordinary people can afford to see a doctor, the average life expectancy of the Han Dynasty is only 30 years old. A large number of newborns die prematurely, and at the age of forty or fifty in the future, they can only be considered middle-aged. They will also die suddenly due to a serious illness, and the cause of this serious illness may be malnutrition.

Even if the survival rate of children can be guaranteed and the lifespan of ordinary people is extended, the elderly must have a place to live under houses of the same size, and couples also need to have a house to live in order to have children.

If there is a lack of new homes, there will be a lack of newborns. After a period of time, the elderly die on a large scale, and a large number of jobs are short of people, and the newborns do not have or are still growing, so a situation of dynasty will occur.

The originally prosperous cities and even countries will return to before liberation overnight... For players who have played construction games, this thing is almost an unavoidable nightmare.

At the same time, in the process of development and construction, improving the prosperity of the city will reduce public security. If the industry is developed, agriculture may be affected. It may be solved through foreign trade, but once the war stage or diplomatic relations are cut off, the disadvantages of relying on imports will be immediately highlighted. For example, coal directly leads to problems with thermal power and heating.

"In other words, where to use every penny, how to use it, and how to use it reasonably should not be the matter this year, but there should be a long-term plan. I think this time is most appropriate in about five years." Zhang Yu took out his superficial economics to explain.

For this era, people who have basically never dabbled in this thing, at least not systematic theoretical knowledge, are like a book of heaven, and they are confused when they listen. But as long as they have political experience and have been exposed to these things, their memory is not that bad. They can basically find that there are indeed problems mentioned by Zhang Yu.

"How did the Prime Minister know so many things?" Liu Bian was a little curious. After all, economics has been summarized in a similar way to "Guanzi", but it is obvious that some parts of the theory are inappropriate.

Economic development also changes with the development of science and technology, just like the feudal era and the steam era, the steam era, the electricity era and even the information era.

"Look more, listen more, think more!" Zhang Yu returned, "You can even understand the rule of various dynasties and countries through reading history books, and then under this rule, what are the good aspects and what are the bad aspects? Is it suitable for use now and how to improve it? When encountering some problems that have obviously happened, how should we avoid... or the meaning of reading history books is here."

After Zhang Yu said that, many officials were embarrassed. After all, there were several schools that developed in the "Spring and Autumn Classic", and they only used the "Spring and Autumn" to explain their ruling philosophy, and even had some reading comprehension.

Not to mention the disciples of various schools, they basically learn, add, or even dare not question the mistakes.

Not to mention, in history books, objectively understand the governing measures and governance concepts of each era, then analyze their quality and badness, and make improvements or improvements. Perhaps, you think that since your dynasty has failed, then this policy may be a failure. And when a certain policy has led to the prosperity of the country during a certain period, it would be good.

Otherwise, during the Wang Mang period, how could a Confucian scholar clamor for the replies to the well-field system of the Western Zhou Dynasty? Because of this prosperity in the Zhou Dynasty, the system of rituals and music collapsed later. The Confucian scholars felt that things were the opposite. It was precisely because of the lack of this system that the situation occurred in the collapse of rituals and music!

Then when something went wrong during the Wang Mang period, I considered whether the system of the Han Dynasty could stabilize after returning to the Han Dynasty. Rather than saying that the people were thinking about the Han Dynasty, it was better to say that they didn’t know how to change it, and were too lazy to change it, and were afraid of changing it. The system of the Han Dynasty was outdated, and there were probably not many people who could see the problem, or they could see it, but they were too lazy to care about it if they did not harm their own interests.

Until Cao Cao did not want to be constrained by the powerful, he promulgated the "Recruitment Order". After offending the powerful because of the Recruitment Order, Cao Pi could only use the "Nine-Rank Zhongzheng" to win back the powerful. In the end, he was cheated for several dynasties, but although the Nine-Rank was retained, it was vague.

On the contrary, the Shangshutai strengthened by Emperor Ling of Han was gradually strengthened, and finally formed a three-province and six-department system...

It’s just that this process is not so natural evolution, but rather forced evolution. Therefore, the problem of human laziness is like this. It’s not about life and death, life or life, or even no one kicks its butt from behind, and is unwilling to take a step forward.

Zhang Yu had no choice but to be the one who could force this society to move forward, even if he was a dictator, he could only be like this.

What he didn't notice was that Yang Jun's eyes were lit up below. Due to the vision of this era, he did not expect some things. As Zhang Yu's disciple, the teacher's words made him suddenly realize, and many things suddenly became clear. Well, after returning, he immediately started reading history books!

What does it mean to steal a teacher? If the teacher doesn’t teach you something, he may forget it or he may have reservations. But in daily habits, he will occasionally accidentally "miss" something. Whether he can "steal" it is the ability of his disciples.

Otherwise, in ancient times, unless you are the eldest son, you have to "steal" if you want to fully learn the skills of your teacher.

"But why is it five years?" Cao Cao asked a question, and Zhang Yu seemed to be confident in saying the five years.

"Five years will not be too long or too short. A policy will need to be implemented in about one year and adapted to it. Then from the third year, confirm whether it is suitable or whether it needs improvement. Before the harm is expanded, we can also adjust it quickly. Not to mention that some policies may not start to be effective in the fourth year, such as tree planting." Zhang Yu returned.

"So that's it. No wonder Chang Ping's trial has been in the past five years." Cao Cao nodded.

When he said that, everyone remembered that the regular liquidation system was proposed, Zhang Yu proposed that the "trial" was carried out in the area controlled by the young commander of the Yellow Turbans in the past. At that time, Zhang Yu used five years as the standard.

"Yes!" Zhang Yu nodded, "The system of Changping Position is the best choice for the country and the people. However, the only one that has suffered damage to this system is the local tyrants. In the original trial scope, the powerful and relatively large population no longer exists, so it can be tried. In other places, I will give them five years to transform, and I can't blame me for whether I succeed or not!"

The ministers were shocked when they heard this. Zhang Yu was really unkind, so I wouldn't say anything important earlier. Seeing that this system has been implemented for nearly three years, many people have not yet noticed this.

After all, if it is implemented in five years, it is said whether it can be implemented in five years. Who would have thought that after the full promotion of this thing, they would face. Zhang Yu told them this point, which was considered to be the end of kindness. More than two years have been a long time, and it is barely enough for them to transform. It would be good if they could take care of themselves and they could not take care of others at all...
Chapter completed!